"The Nameless Underling Rises in Another World"

"Hey, why don't you get reincarnated into another world?" "Yes, sir." Well, I've finally made my debut in another world. Man, I'm so pumped up. Honestly, I haven't been this excited since middle school when my friend and I traded each other's older sisters' underwear. Apparently my soul is quite special, and I'm supposed to be able to dominate in the other world I'm reincarnated into—oh yeah! Youngest S-rank adventurer? Slave harem? Master of my own domain? Let's do this. Yeah, I'm totally gonna do this. Whether it's thieves, monsters, demons, demon lords—if need be, I'll even take down a king. But when I got cocky like that, I ended up reincarnating as a street urchin in the slums. Well, that's fine too—seems fun enough. Woo-hoo! This story is an epic narrative poem of me—who was living a pathetic life in my previous existence—now living an exciting, violent, and happy life in a world of swords and magic, gradually rising to become the strongest through rather underhanded methods.